Siem Industries SA is a diversified holding company that operates through its autonomous industrial subsidiaries and affiliates that are engaged in the oil and gas services industry and renewable energy sector, ocean transportation of refrigerated cargoes and automobiles, potash-mining, ship building, and finance, which includes loans and guarantees, specialist credit advisory services and investments. It operates through the following business segments: Offshore Support Vessels; Reefer Vessels and Car Carriers; Cable-lay for Offshore Wind Farms; Scientific Core-Drilling; Shipyard Construction; Potash-Mining; and Corporate and Other. The company was founded by Kristian Siem in October 1980 and is headquartered in Luxembourg.